1 /*
2 * Copyright 2020 Advanced Micro Devices, Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 */
23 #include "amdgpu.h"
24 #include "smuio_v11_0.h"
25 #include "smuio/smuio_11_0_0_offset.h"
26 #include "smuio/smuio_11_0_0_sh_mask.h"
27
smuio_v11_0_get_rom_index_offset(struct amdgpu_device * adev)28 static u32 smuio_v11_0_get_rom_index_offset(struct amdgpu_device *adev)
29 {
30 return SOC15_REG_OFFSET(SMUIO, 0, mmROM_INDEX);
31 }
32
smuio_v11_0_get_rom_data_offset(struct amdgpu_device * adev)33 static u32 smuio_v11_0_get_rom_data_offset(struct amdgpu_device *adev)
34 {
35 return SOC15_REG_OFFSET(SMUIO, 0, mmROM_DATA);
36 }
37
smuio_v11_0_update_rom_clock_gating(struct amdgpu_device * adev,bool enable)38 static void smuio_v11_0_update_rom_clock_gating(struct amdgpu_device *adev, bool enable)
39 {
40 u32 def, data;
41
42 /* enable/disable ROM CG is not supported on APU */
43 if (adev->flags & AMD_IS_APU)
44 return;
45
46 if (!(adev->cg_flags & AMD_CG_SUPPORT_ROM_MGCG))
47 return;
48
49 def = data = RREG32_SOC15(SMUIO, 0, mmCGTT_ROM_CLK_CTRL0);
50
51 if (enable)
52 data &= ~(CGTT_ROM_CLK_CTRL0__SOFT_OVERRIDE0_MASK |
53 CGTT_ROM_CLK_CTRL0__SOFT_OVERRIDE1_MASK);
54 else
55 data |= CGTT_ROM_CLK_CTRL0__SOFT_OVERRIDE0_MASK |
56 CGTT_ROM_CLK_CTRL0__SOFT_OVERRIDE1_MASK;
57
58 if (def != data)
59 WREG32_SOC15(SMUIO, 0, mmCGTT_ROM_CLK_CTRL0, data);
60 }
61
smuio_v11_0_get_clock_gating_state(struct amdgpu_device * adev,u64 * flags)62 static void smuio_v11_0_get_clock_gating_state(struct amdgpu_device *adev, u64 *flags)
63 {
64 u32 data;
65
66 /* CGTT_ROM_CLK_CTRL0 is not available for APU */
67 if (adev->flags & AMD_IS_APU)
68 return;
69
70 data = RREG32_SOC15(SMUIO, 0, mmCGTT_ROM_CLK_CTRL0);
71 if (!(data & CGTT_ROM_CLK_CTRL0__SOFT_OVERRIDE0_MASK))
72 *flags |= AMD_CG_SUPPORT_ROM_MGCG;
73 }
74
75 const struct amdgpu_smuio_funcs smuio_v11_0_funcs = {
76 .get_rom_index_offset = smuio_v11_0_get_rom_index_offset,
77 .get_rom_data_offset = smuio_v11_0_get_rom_data_offset,
78 .update_rom_clock_gating = smuio_v11_0_update_rom_clock_gating,
79 .get_clock_gating_state = smuio_v11_0_get_clock_gating_state,
80 };
81